Furmace roof



Jam.. 29 11923.,

w H. COTTON. FURNACE ROOF.

FILED JAN. 13, 1921. 2 SHEETS-sues? 1 Each the following is aspecification,

Patented lara-2, i923 'certera'.

waarna n. carrots; or carence, rtnntors.

` runitacn neer.-

Application filed January t3, S9211. Serial No. @37,6%6.

.Ta'aZZ who/m, it may concer-n.'

Be it known that l, WALTER H. CorroN, aV citizen of the United States,and resident of Chicago, county cf Cook,'and State of lllinois, haveinvented certain new and useiiul improvements in Furnace `Roofs, ofwhich and which are illustrated in the accompanying' draw- .'ings,forming a part thereof.

rllhe invention relates to furnace roots formed of brick, andparticularly to roots which are not inclosed within the due or otherchambers of the furnacerlhe object is to provide a roof which; may bereadily assembled, will be durable, and easily repaired, and which issupported without lateral strains upon the furnacewalls.

rlllie invention is exemplified in the construction hereinafterdescribed and illustrated in the accompanying drawings, in Which- Fig. 1is a detail transverse vertical section through a furnace fire-box;

Fig. 2 is a. similar view taken on line 2-2 of Fig. 1;

lFigs. 3 anda are views in perspective etA two forms of brick used inthe construction of the roof; and

lig. 5 is a partial detail plan viewv with portions broken away et afurnace.

rlhe side walls of a lire-box are shown at 10, 11, and one ot its endwalls .at 12, these walls being of masonry and ot ordinary construction.'lhe roof is 'constructed'ot brick of special form, as shown at 13, 14.These bricks are assembled in independent groups, as 15, eachgroupconsisting of a central 'element, being one of the bricks 13, and aplurality of bricks 14 at each side of the central brick. .The number ofbricks 14C used in each group lmay be varied, as shown six areernployed.

of the central bricks 13 is provided on each ot its vertical sideaces'with an upwardly facing rib 16, 17, and each ot the bricks 1t isprovided on one side face with a complementary downwardly facingshoulder18, and upon'the opposite tace with an upwardly facing shoulder 19 ofthe saine.

Jform as the shoulder 1 6, 17 rlfhese shoulders are undercut, andpreferably given an S curve. The central brick 13 is ,provided with a T'recess 20 in its upper tace, to receive the head of a hanger bolt 21which depends from a Stringer 22.

'llhe central brick 13 ot each section of the root' being properlyplaced,- a pair ot the bricks 14:have their shoulders engaged with it,and the'sectionis built out by the addition ot more bricks of the sametorni. As 60 many of these roof Isections are employed asmay benecessary 4to nll the entire space between ythe walls-ot thenre-box. I

'lhe outer end brick ot' each end section of the course bears againstthe adjacent .side

wall, asl() or l1, and preferably, although not necessarily, this wallis provided with an upwardly facing shoulder 23 upon which the brickrests. rllhe end bricks oit adjacent sections of the root are in bearingbut not 70 interlocking engagement." While these lend bricks 1d of eachsection are shown as having upwardly facing shoulders, it is obviousthat this detail is not essential but is preferably followed in order'to limit the number of 75 special terms required to be molded.

'llhe stringere` 22 are supported upon cross beams, as 2d, which arecarried by the side walls of the femm, or preferably, as

shown, by metal' .columns 25 associated 80 therewith.

ltwill thus be seen that the root. iscomposed of a plurality ofjuxtaposed courses extending between opposite walls ot the furnace, theseveral courses, while being in bearing contact, being relativelyindependent. The several sections ot' each course are relatedindependently and each is supported by the hanger associated with it.

The bricks of each section are held together by their. interlockingengagement, and each section may be built up and placed withoutrequiring temporary support during the construction oft the roof. Shouldany ot the bricks ld be damaged and replacement become necessary, theymay be easily removed, the end bricks of each section being withdrawnand subsequently as many others as may be necessary to reach the onewhich is damaged. Should it become neoeary to replace -one of thecentral bricks 13, the entire section is withdrawn and reconstructed, asmany of the old bricks 14 being used as are found serviceable.

l' claim as my invention-.- 1. A vturiiaceroot comprsing two ofinterlocking brick and a central eement with which one member of eachgroup interlocks, and a hanger attached to the central element andforming the support tor the entire mass.

2. Ar furnace root comprising, in combianda 'hanger for each section.

nation, a course of brick consisting of a plurality of independentabutting sections, each section bein composed of a plurality ofinterlocking rick, and a supporting a plurality of laterally juxtalMacnee nation, a course 4of brick consisting of ay plurality ofindependent abutting sections, each section being composed cfa pluralityof interlocking brick, and a hanger for each section forming the solesupport for said section. y Q

5. A furnace roof comprising two groups of interlocking brick and acentral element with which one member of each group inn terlocks, and ahanger attached to thel central lelement and forming the support for theentire mass, said central 'element comprising a brick having laterallyupwardly facing shoulders and said interlocki bers having complementaryshoulders for engaging t Waarna n'. correu.

ng meme upwardly facing shoulders. v

